Dumping-car.



No. 652,|98. Patented lune I9, [900. S. STEWART.

DUMPING CAR.

(Application lel Oct. 1B, 1899.)

(No Model.) 7 Sheets-Sheei I.

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No. 652,|98. Patented lune I9, |900:I S. STEWART.

DUMPING CAR.

(Application med o'cz. 1s, 1.89m (No Model.) 7 Sheets-Sheet 21.

HIHHIIIIHIIIIIIIIIHHHHN WVM/Lamas No. 652,I98. Patented l'une I9,|900.,v

s. STEWART.,

DUMPlNG CAR.

(Application med oct. 1s, 1899.) (No Model.)

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No. 652,|9e.

Patented lune I9, |900. S. STEWART. DUMPING CAR.

(Application filed Oct. 18, 189.9.)

7 Sheets-Sheet 4.

(No Model.)

wem l'oz A l No. 652,i98. Patented lune I9, |900.

S. STEWART. Y

DUMPING CAR.

(Application led Oct. 18, 1899 1 (No Model.)

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7 Sheets-Sheet 6.

Patented lune I9. 1900.

S. STEWART.

DUMPING CAR.

[Application led Oct. 18, 1899.)

(No Model.)

No. 652498. Patented lune 19, |9150., s. STEWART.

DUMPING CAR.

(Application med occ. 1s, 1899.) (No Model.) 7 Sheets-Sheet 7.v

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u #Mmm/L@ l UNITED STATES PATENT EEIcE.

SAMUEL STEWART, OF lfVOODlVARD, ALABAMA, ASSIGNOR OF NE-HALF TO FRANK M.EATON, OF SAME PLACE.

DUIVIPING-CAR.

SPECIFICATION forming part of Letters Patent No. 652,198, dated June 19,1900.

u Application tiled October 18, 1899. Serial No. 734,009. (No model.)

To @ZZ whom, t may concern.:

Beit known that I, SAMUEL STEWART, a citizen of the United States,residing at Vood- Ward, in the county of Jefferson and State of Alabama,have invented certain new and useful Improvements in Dumping-Cars; and Ido hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

This invention relates to improvements in dumping-cars, and especiallyto that class of dumping-cars in which the car-body consists of a slagor cinder pot pivotally mounted between two trucks and adapted to betilted or dumped by steam, compressed air, or other motive fluid; andthe object of this invention is to provide a quick, cheap, andconvenient means of handling molten slag, iron, steel, or

other substances from blast-f urn aces or steelworks, though it willhereinafter be seen that the said car may be used for many other pur iposes. Besides providing a means by which these cinder or slag pots maybe expeditiously and easily dumped, another object of my said inventionVis to provide additional means for thoroughly ridding the bottom of thepot' of its contents. After continued use the bottom of the pot becomescoated with a scale which it becomes necessary to remove. For thispurpose a plate is placed in the bottom of the pot and is provided witha stem which eX- tends through the bottom of the pot and is connected toa lever which is in turn operated by the piston of a compressed-air orsteam cylinder. In this way by simply admitting steam or air to thecylinder the scale may be quickly and easily broken up and removed.

My said invention consists, further, in the combination of devices anddetails of construction hereinafter inore particularly described andclaimed, and in order that the said inventionV may be more fullydescribed reference will be had to the accompanying drawings, in which-Figure 1 represents in side elevation a dumpingcar embodying myinvention. Fig. 2 represents a top plan View of the same. Fig. 3represents an end elevation of the same. Fig. 4 ,represents a verticalcentral sectional view of the dumping and cushioning cylin` ders and theoperative connection with the gear which actu ates the pot, the sectionbeing taken along the line 4 4, Fig. 5. Fig. 5rep resents a sectiontaken along the line 5 5, Fig. 4, looking in the direction of the arrowand showing the manner in which the steam or air pipe passes through thetrunnion. Fig. 6 represents the trunnion and cylinder supporting standin perspective. Fig. 7 is a perspective view of one'of the collars forlimiting the angle through which the pot turns. Fig. 8 is a perspectiveview of the trunnion-supporting stand used at the opposite end of thecar from the cylinders. Fig. 9 represents in perspective a collar usedin connection with the last-mentioned stand for limiting the anglethrough which the pot turns. Fig. 10 represents a central verticalsection of my improved fourway valve used in connection with thedumping-car, the section being taken along the line 10 10, Figs-12 and13. Fig. 11 represents a central vertical section of the same valve,taken along the line 11 11, Figs. 12 and 13. Fig. 12 represents asection taken along the line 12 12, Fig. 10, looking down. Fig. 13represents a section taken along the line 13 13, Fig. 10, looking down.Fig..14. represents a section taken along the line 13 13, Fig. `10, andlooking down, the valve being turned ninetydegrees from the positionshown in Fig. 13. Fig. 15 represents a top plan view ofthe valve-seat,and Fig. 16 represents an inverted plan View of the valve.

Similar letters refer to similar parts throughout the several views.

A represents the cinder or slag pot forming the body of the car andmade, preferably, of iron or steel plates and lined with plates ofcast-iron or other suitable material. This pot is supported in the bailB, which surrounds the pot, and is bolted together, as at b. To the endsof this bail and diametrically opposite each other are bolted the hollowtrunnions C and C'. For the purpose of securing these trunnions to thebail they are each provided with a anged head c and c', respectively,through Which pass the bolts 'b into the fianged heads b2 at each end ofthe bail. The trunnions C and C are journaled, respectively, in thestands D and D', mounted upon the car-trucks E E. The outer face of IOOthe head of the stand D is cast with aprojection d upon it, forming theshoulders d', which are about one hundred and twenty degrees apart asmeasured upon the said projection, and a collarDO, having a projectiond2, which forms the shoulders cl3, is keyed upon the trunnion C, so thatthe projection d2 will engage the face d4 of the stand. (See Figs. (3

and 7.) The projection d2 extending one with respect to the clutcharrangement, be-

ing providedwith the projection d5, forming shoulders d6, which engagethe shoulder Z7 of the collar D00. Both of these constructions are mostclearly shown in Figs. 6 to 9, inclusive, Fig. 1 showing the stand D' asturned around with respect to the stand D to more clearly show itsconstruction.

F and G represent the dumping and cushion cylinders, respectively. Thesecylinders are preferably cast together and are bolted to the sideextension d8 of the stand D. H represents a rack which works in a guidej', cast on the cylinder F, and is provided With a rightangle arm h, towhich the piston-rods f and g are secured, the ends of the piston-rodspassing through the arm and being held by nuts f and g. The rack Hmeshes with a gear-wheel t', keyed on the trunnion C, so that as therack is raised or lowered the trunnion will be turned and the pot alsoturned to a corresponding extent, the limit to which the pot is usuallytipped being ninety degrees. The rack is thus moved up and down byadmitting steam or air into the cylinder F. For this purpose the headsof the cylinder are tapped, as at]08 andf4, and fitted with the pipes Land M, respectively. When steam or air is admitted into one end of thecylinder F-say through the pipe M-the piston will ascend and cause lthepot to dump, whereas when it is required to bring the pot back to itsnormal position the air or steam is admitted through the pipe L into theother end of the cylinder, when the piston Will descend, causing the airor steam which had raised it to exhaust through the pipe M. The air orsteam is thus admitted or exhausted to and from the cylinder F through afourway valve N of novel construction, which will hereinafter bedescribed in greater detail. This four-Way valve is connected with themain steam or air supply pipe O by the pipe P and is also connected withthe exhaust-pipe Q.

The steam or air pipe O is provided with a flexible joint at 0 andpasses through the hollow trunnion C, then through the bail B and aroundthe outside of the pot, and then yFigs. 10 to 16, inclusive.

through the bail again and out through the other trunnion C, where it isprovided with a flexible coupling o.

When several of these cars are used, forining a train, the main steam orair pipes of all are connected together, the flexible couplings 0' beingprovided for that purpose, so that air or steamfrom thc engine-boiler'or other source may be supplied to the whole train.

In order to prevent a jar or sudden shock of anypart of the machinerywhen the dump ing operation takes place, the cushion-cylinder G isprovided, the piston-rod of which is connected to the rack whichoperates the gear-Wheel I, as hereinbefore described. Thiscushion-cylinder G is illed with oil or other suitable liquid, and bothends of the cylinder are connected by a pipe g2, which is provided Withthe valve g3 for regulating the ow of liquid through the pipe from oneend of the cylinder to the other. By means of this valve the cushion canbe regulated with great precision. Resting upon the bottom of the pot isa plate R, to which is rigidly secured a stem or rod r, which passesthrough an openingr in the bottom of the pot. The lower end of the stemr is pivoted to one end of a lever r2, which is fulcrumed in a bracketr3, secured to the pot. The other end of the lever r2 is pivoted to thepiston-rod s of the cylinder S. This cylinder S is bolted to the bail B,as at s', and' is connected at each end through the pipes T and U withthe four-way valve N. This valve is similar tothe valve N and isconnected by the pipe Vith the main steam or air pipe O, the said pipeVbeing provided with a valve 02, by which the connection from the mainsteam or air pipe may be cnt. oft' at will. The exhaust steam or airpasses from the Valve N' out through the pipe W. If a crust has formedover vthebottom of the pot and it is desired to break it up, steam orair is admitted into the upper end of the cylinder S by operating thevalve N'. This will force the piston of the cylinder down, and this willin turn force the plate R up, which will break the crust formed over it.Then by turning` the handle of the valve N ninety degrees in theopposite direction the upper end of the cylinder is open to exhaust,while steam or air is admitted into the other end, and this, as Will bereadily seen, will bring the plate back to its normal position upon thebottom of the pot. It will thus be seen from the foregoing descriptionthat the cinder-pot, however heavy its contents are, may be operated bya single attendant by operating the valve N. The same attendant may alsooperate the valve N', both being near each other, and thus easily removethe scale or any matter that tends to stick to the bottom of the pot,all of which renders the handling of the material much easier than is atpresent the practice.

The four-way valve N is shown in detail in The base or valveseat nisprovided with four ports n', fn?, n3, and

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IIO

.ing exhausted from the other.

n, the port n' connecting with the air orsteam supply pipe l?, the portn2 with the cylinderpipe L, the port n3 with cylinder-pipe M, and theport n4 with the exhaust-pipe Q, the said pipes being screwed into theseports,as shown. The port at', which connects with the supplypipe, passesup through the center of the valve-seat, while the other ports areninety degrees from each other and arranged around the centralsupply-port. (See Fig. 15.) The valve a5 rests upon the valve-seat n andis provided with a transversely-extending chamber n, forming a cavityinvits lower face, the length of the chamber being equal to the sum ofthe diameters of the admission-port and one of the other ports plus thedistance between the two. The valve is also provided with three portsa7, ns, and m9, which register with the ports n2, n3, and n4 of thevalve-seat. These ports nl, ng, and nf do not pass all the way throughthe valve, but communicate with each other by means of an interiorannular passage n10. The valve 01,5 is inclosed in a casing n, which islprovided at its lower end with an annular flange w12, through which thebolts m13 pass into the valve-seat to hold the two together.. The upperface of the valveseat fits accurately into the casing, passing up intothe latter, as shown. The valve is provided with the valve-stem n, thelower end of which fits into a cavity nl in an extension nu on the topof the valve. The stem then passes up through the stuffing-box n and isprovided at its upper end with a handle nw, by which it is operated. Thesaid stern has also an annular ring or flange n2() upon it, which islocated just between the valve-casing and the top of the valve, whichkeeps the latter from becoming displaced. The angular or rotary movementof the Valve is limited by the stops n, which bring up against the lugw22 of the casing. The valve n.5 is held down upon its seat by thepressure of the steam or air above it, which passes through the opening71,22. If we suppose the valve to be in the position shown in Figs. 10,11, 12, and 13, the steam or air will enter through the pipe P,wll passthrough the port n,through the passage n, and out through the port n3and pipe M to one end of the cylinder or other device with which thevalve is used. In this position, as shown most clearly in Fig. 13, itwill be seen that the cylinder-pipe Lis in communication with thecylinder-pipe port n and exhaust-port n4, from which it will be seenthat while steam or air is being admitted through one of thecylinder-pipes it is be- It the valve is now turned through an angle offorty-five degrees in the direction of the arrow X, Fig. 13, the steamor air will be entirely cut off, while by turning the valve forty-fivedegrees farther in the same direction the cavit-y or chamber n of thevalve will lap the port n2 instead of port n3, when steam or air will beadmitted through the port 'n2 and exhausted from the port n3.

It is obvious that the invention herein described is capable of manymodifications, which may be made without departing from the spirit ofthe invention. Thus, for example, while I have shown and described acinder or slag pot ot a certain type as forming the car-body I do notconfine myinvention to this specific structure, as car-bodies of manyother kinds may also be used in connection with the dumping apparatusherein described.

Vhat I claim as my invention, and desire to secure by Letters Patent ofthe United States, is-

1. In a dumping car, a pivotally-mounted car-body,.a cylinder and air orsteam pipes connected therewith, a rackpand pinion forming an operativeconnection betweenv the piston-rod of said cylinder and said car-body,whereby the said car-bod y may be tilted, substantially as described.

2. In a dumping-car, a pivotally-mounted car-body, a stationarycylinder, and air or steam supply pipes connected therewith, operativeconnection between the piston-rod of said cylinder and said car-body,whereby the said car-bod y maybe tilted, and a cushioningcylindercontaining a fluid adapted to retard the tilting movement of said body,and a pipe connecting the ends of said cushion-cylinder for conveyingthe cushioning fluid, substantially as described.

3. In a dumping-car, a tilting car-body provided with trnnnions uponwhich itis mounted, a cylinder, and air or steam supply pipes connectedtherewith, a rack and pinion forming an operative connection between thepiston-rod of said cylinder` and one of said trunnions, whereby the saidcar-body maybe tilted, and means for cushioning the tilting movement ofsaid car-body, substantially as de scribed. t

4.v In a dumping-car, a pivotally-mounted car-body, a dumping-cylinderand air orsteam supply pipes connected therewith, operative connectionbetween the piston-rod of said cylinder and said car-body,` whereby thesaid car-body may be tilted, a cushioning-cylinder containing a fluidfor cushioning the tilting movement of the said car-body, a pipeconnecting the ends of said cushion-cylinder and means located in saidpipe for varying the cushion of said cylinder, substantially asdescribed.

5. In a dumping-car, a pivotally-mounted car-body, a dumping-cylinder,and air or steam supply pipes connected therewith, a rack and pinionforming an operative connection between ihe piston-rod of said cylinderand said car-body, whereby the said car-body may be tilted, acushioning-cylinder having its: piston-rod connected with the piston-rodof the said stationary cylinder, substantially as described. v

G. In a dumping-car, a pivotally-mounted car-body, a stationarycylinder, and air or steam pipes connected therewith, operative IOO IIO

connection between the piston-rod of said cylinder and said car-body,whereby the said car-body may be tilted, a cushioning-cylinder forcushioning the tilting movement of the car-body, a pipe connecting theends ot' said cushioning-cylinder with each other and a valve located insaid pipe, substantially as described.

7. In a dumping-car, a tilting car-body, and trnnnions supporting thesame, a gear-wheel mounted on one of said trunnions, a rack meshing withsaid gear-Wheel, a stationary cylinder having air or steam pipesconnected therewith, and operative connection between the piston-rod ofsaid cylinder and said rack, substantially as described.

8. In a dumping-car, a tilting car-body, and trunnions supporting thesame, a gear-wheel mounted on one of said trunnions, a rack meshing withsaid gear-wheel, a stationary cylinder having air or steam pipesconnected therewith, and operative connection between the piston-rod ot'said cylinder and said rack, whereby the said car-body may be tilted,and a cushioning-cylinder having its piston-rod connected with said rackand acting to cushion the tilting movement of said car-body,substantially as described.

9. In a dumping-car, a pivotally-supported car-body, a dumping-cylinder,and air or steam supply pipes connected therewith, a rack and pinionforming an operative connection between the piston-rod of said cylinvder and said car-body, whereby the said carbody may be tilted, and afour-way valve connected to the steam or air pipes of saidcylinder andwith the source ot steam or air sup-v ply and adapted to admit steam orair into one end of said cylinder While allowing it to exhaust from theother end, substantially as described.

10. In a dumping-car, a tilting car-body, and trunnions supporting thesame, a gearwheel mounted on one of said trunnions, a rack meshing withsaid gear-Wheel, a stationary cylinder having air or steam pipesconnected therewith, operative connection between the piston-rod of saidcylinder and said rack, and a four-way valve connected to said steam orair pipes and admitting air or steam to one end of said cylinder whileallowing it to exhaust from the other end, substantially as described.-

11. In a dumping-car, the combination with a receptacle forming thecar-body, a frame in which the said receptacle is mounted, a hollowtrunnion secured to each end of said frame, a stationary cylinder, steamor air supply pipes connected with said cylinder, operative connectionbetween the piston-rod of said cylinder and one of said trunnions,whereby the said car-body may be tilted, a main steam or air pipepassing through said trunnions, around said frame and connected to thepipes of said cylinder, substantially as described.

' 12. In a dum pin g-car, the combination with a cinder or slag potforming the car-body, a bail or supporting-frame in which the said potis mounted, a hollow trunnion secured to each end of the saidsupporting-frame or bail, a gear-Wheel carried upon one of saidtrunnions, a rack meshing with said gear-wheel, a dumping-cylinderhaving its piston-rod connected to said rack, steam or air pipesconnected to said cylinder, and means for governing the flow of steam orair to and from said cylinder whereby the said-car-body may be' tiltedand returned to its initial position, substantially as described.

13. In adumping-car, the combination with a cinder or slag pot formingthe car-body, a bail or supporting-frame in which the said pot ismounted, a hollow trunnion secured to each end of the saidsupporting-frame or bail,

a gear-wheel carried upon one of said trunnions, a rack meshing withsaid gear-wheel, a dum ping-cylinder having its piston-rod connected tosaid rack, steam or air pipes connected to said cylinder, means forgoverning the iiow of steam or air to and from said cylinder, wherebythe said car-body may be tilted and returned to its initial position,and a cushioning-cylinder having its piston-rod connected to said rack,whereby the tilting movement of the car-body is cushioned, substantiallyas described.

14. The combination with a car-body, of a plate located in the bottom ofsaid car-body, a stationary cylinder, air or steam pipes connected tosaid cylinder, and operative connection between the piston-rod of saidcylinder and said plate, whereby the said plate ICO may be raised orlowered for the removal of material from the vbottom of the car-body,substantially as described.

15. The combination with a car-body, of a plate located in the bottom ofsaid car-body, A

a stationary cylinder, steam or-air pipes connected with said cylinder,a lever connecting the piston-rod of said cylinder with said plate,whereby the said plate may be raised or lowered for the removal ofmaterial from the bottom of said car, substantially as described.

16. The combination with a car-body, of a plate located in the bottom ofsaid body, a stem secured to said plate and extending through the bottomof said car-body, a lever connected to said stem, a cylinder having itspiston-rod connected to said lever, steam or air pipes connected to saidcylinder, and a valve for controlling the admission of steam or air intosaid cylinder, whereby the said plate may be raised or lowered to removematerial from the bottom of said car-body, substantially as described.

17. yIn a dumpingcar, the combination with acinder or slag pot formingthe car-body, of means for tilting said pot, a plate located in thebottom of said pot, a cylinder carried by said car, operative connectionbetween the piston-rod of said cylinder and said plate, and means foradmitting steam or air into said cylinder and exhausting the same there-IIO from, whereby the said plate may be raised in removing material fromthe bottom of said pot, substantially as described.

18. In a dumping-car, a tilting car-body, and trunnions supporting thesame, a gearwheel mounted on one of said trunnions, a rack meshing withsaid gear-wheel, a cylin. der having air or steam pipes connectedtherewith, and operative connection between the piston-rod of saidcylinder and said rack7 substantially as described.

19. The combination with a car-body, of a plate located in the bottom ofsaid car-body, a cylinder, air or steam pipes connected to saidcylinder, and operative connection between the piston-rod of saidcylinder and said plate, whereby the said plate may be raised or loweredfor the removal of material from the bottom of the car-body,substantially as described.-

20. The combination with a car-body, of a plate located in the bottom ofsaid car-body, a cylinder, steam or air pipes connected with saidcylinder, a lever connecting the pistonrod of said cylinder with saidplate, whereby the said plate may be raised or lowered for the removalof material from the bottom of said car, substantially as described.

2l. In a dumping-candle combination with a receptacle forming thecar-body, trunnions supporting said receptacle, stands provided withjournal-bearings in which said trunnions are mounted, said stands beingprovided with projecting shoulders, collars mounted on said trunnionsand adapted to engage said shoulders and thus limit the angle throughwhich the said car-body may be dumped, a dumping-cylinder and operativeconnection between the piston of said cylinder and said car-body,whereby the latter may be dumped, substantially as described.

In testimony whereof I aix my signature in presence of two witnesses.

- SAMUEL STEWART.

Titnessesz I FRANK M. EATON,

A. AI'rcHEsoN.

